3(a+7)=51

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Solution for 3(a+7)=51 equation: 



3(a+7)=51

We move all terms to the left:

3(a+7)-(51)=0

We multiply parentheses

3a+21-51=0

We add all the numbers together, and all the variables

3a-30=0

We move all terms containing a to the left, all other terms to the right

3a=30

a=30/3

a=10

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